1、Convenient To Use: The water tester is small in size and light in weight, which makes it easy to carry and use without frequent adjustments. 2、High Accurte Design: TDS meter measurement data is fast and easy, and the measurement value is trustworthy. 3、Exquisite Workmanship: TDS tester adopts better microcomputer technology and is specially designed for on site rapid measurement. 4、Wide Range Of Use: LCD TDS tester with luminous display, suitable for providing reliable measurement results in harsh environments. 5、Good Performance: The hydroponic aquaculture analysis instrument is stable and high, with a measurement accuracy of ±2% F.S. Item Type: TDS Meter Material: ABS Weight: Approx. 140g / 4.9oz Product Size: Approx. 16.6x5x2.8cm / 6.5x2.0x1.1in (including the thickness of the back battery shell) Battery: 4 x LR44 1.5V batteries (Delivery without batteries) Range: Lowest 0~1999ppm; highest 0~19.99PPT Resolution: TDS: minimum 1ppm; maximum 0.01PPT Accuracy: ±2%F.S Temperature Compensation: 0℃~50℃ Working Temperature: 0℃~50℃ Display Mode: Large screen 4 digit LCD digital display Probe Type: Graphite electrode 1 x TDS Meter(Battery Not Included) 1 x Modification Tool 1 x Manual 1 x Plastic Box